HardLabs

RatGDO-OpenSource-D1Mini-ESP32

scottdube·my-rat-ratgdo·kicad_files/D1 Mini - ESP32/RatGDO-OpenSource-D1Mini-ESP32.kicad_pcb

RatGDO-OpenSource-D1Mini-ESP32 PCB layout, top view — open source ESP32 board by scottdube

About the RatGDO-OpenSource-D1Mini-ESP32 PCB

RatGDO-OpenSource-D1Mini-ESP32 is an open source ESP32 PCB design by scottdube, published on GitHub under the MIT license. It is a 2-layer board measuring 62 × 89.7 mm, with 21 components from 16 distinct parts.

Its main chip is the mini_esp32, from the ESP32 family. By type, the board carries 8 connectors, 8 resistors, 3 transistors, 1 IC and 1 fuse.

It belongs with the iot & wireless, power & battery and sensors designs in this gallery.

From the project

DIY local Security+ 2.0 garage control for Home Assistant — my rat-ratgdo (D1 Mini ESP32) variant: on-board LM2596, battery-backup tap, SHT3x temp/humidity, and a piezo buzzer.

I started from Kaldek's D1 Mini – ESP32 variant and added four things aimed at making the board a self-sufficient, locally-controlled garage controller that keeps working through a power outage:

- SHT3x temp/humidity sensor (I²C, addr 0x44, SDA GPIO18 / SCL GPIO19). Garage climate in Home Assistant for free — freeze/heat alerts, humidity logging — with no second device. Brought out on a JST header to a remote breakout so the sensor isn't skewed by board or enclosure heat. - 12 V piezo buzzer driver (2N7002 on GPIO17). Local audible feedback — door-left-open nag, closing warning — that…

RatGDO-OpenSource-D1Mini-ESP32, from the project README
From the project README

Main components on the RatGDO-OpenSource-D1Mini-ESP32

mini_esp32

RatGDO-OpenSource-D1Mini-ESP32 bill of materials (BOM)

21 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
mini_esp32
U1
1
2N7002
Q1
1
AO3400A
Q2
1
2N7002
Q3
1
GDO
J1
1
Wall Switch
J2
1
Obst Left
J3
1
SHT4x_I2C
J4
1
Piezo 12V
J5
1
Batt In
J6
1
LM2596
J7
1
Obst Right
J8
1
1A
F1
6
10k
R1, R2, R3, R5, R6, R8
1
1k
R4
1
220
R7

RatGDO-OpenSource-D1Mini-ESP32 design files

The KiCad project lives in the scottdube/my-rat-ratgdo repository on GitHub; these links point at the commit this page was built from.

RatGDO-OpenSource-D1Mini-ESP32: common questions

What microcontroller does the RatGDO-OpenSource-D1Mini-ESP32 use?

The RatGDO-OpenSource-D1Mini-ESP32 is built around the mini_esp32, from the ESP32 family.

How big is the RatGDO-OpenSource-D1Mini-ESP32 PCB?

The RatGDO-OpenSource-D1Mini-ESP32 measures 62 × 89.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RatGDO-OpenSource-D1Mini-ESP32?

21 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the RatGDO-OpenSource-D1Mini-ESP32 design files?

From the scottdube/my-rat-ratgdo repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the RatGDO-OpenSource-D1Mini-ESP32 design in my own project?

Yes, under the terms of its MIT license, which scottdube chose for the repository.

Can I test firmware for the RatGDO-OpenSource-D1Mini-ESP32 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

More boards in my-rat-ratgdo

Similar boards